https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71133
Bug ID: 71133 Summary: msp430-elf -mlarge FTBFS in libstdc++-v3 Product: gcc Version: 6.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: yselkowi at redhat dot com Target Milestone: --- Building gcc 6.1.0 with newlib 2.4.0 for target msp430-elf fails during configure-target-libstdc++-v3 in the 'large' multilib: checking how size_t is mangled... x configure: error: Unknown underlying type for size_t Where the relevant information that GLIBCXX_CHECK_SIZE_T_MANGLING doesn't know how to handle appears to be: #define __SIZE_TYPE__ __int20 unsigned